Hydraulic suction device



June 30, 1931. STAMM 1,812,724

HYDRAULIC SUCTION DEVICE Filed April 25. 1928 Patented June 30, 1931UNITED. STATES JOHN G. STAMM, OF EAST CLEVELAND, OHIO HYDRAULIC SUCTIONDEVICE Application filed April 23,

My invention relates to improvements in hydraulic induction devices.

An object of my invention is to provide for the eflicient induction ofair by a jet of liquid, in such an improved manner that the jet will notbe disrupted by the induced flow of air as is thecase in certain priorconstructions where a swirling effect upon the air is created in theinduction chamber, with consequent disruption of the jet and aconsiderable resultant loss of efliciency in induction.

Another object of my invention is to provide an improved suction cleanerthat may take up water as well as dirt without injury thereto. 7

Another object of my invention is to provide an improved suction devicewhich contains a minimum number of parts, that is inexpensive tomanufacture, inexpensive to operate and which requires little or noattention after installation.-

Another object of my invention is to pro: vide a device of the classdescribed that may be used in conjunction with any of the various typesof high pressure pumps.

Other objects of my invention and the invention itself will becomebetter understood by reference tothe following description of anembodiment of my invention illustrated in V the attached drawingsforming a part of this specification.

Referring tothe drawings: I

Fig. 1 is a vertical medial sectional view of an embodiment of myinvention;

Fig. 2is a vertical medial sectional view takenat right angles to thatof Fig. 1;

Fig. 3 is a' plan view of the device of Fig. 1; 1 a

Fig. 4 is a fragmentarysectional view of an air inlet; and

Fig. 5 is a diagrammatical view of one of the devices of my invention asconnected for operation.

Referring to the figures of the drawings wherein like parts aredesignated by like reference characters, at 1, Fig. 1, I have provided ahollow eliptical casing having an upper chamber 2, and a threadedorifice 3 adapt- 9 ed to receive a conduit. The upper chamber 1928.Serial No. 272,235.

the lower part a bluntplane 9 is formed havinga pair of modified ridges10 substantially triangular in shape extending at nearly right anglesthereto with their thickest portions at the edges of the opposite sidesof the plane and gradually tapering outward towards the lower point 11as it nears the exhaust end, finally merging with the walls of thecasing. The extremity of the exhaust chamber is threaded at 13 toprovide means for attaching an exhaust conduit substantially asillustrated in Fig. 5.

"The pear-shaped center 7 which issurrounded on two opposite sides bythe passages 5 and 6 is provided with a chamber 14 disposed in the lowerportion thereof. A pair of canals 15 and 16 open into the chamber 14 andare threaded to receive therein a pair of conduits not shown. The bottomof the chamber 14 connects with the up per part of the exhaust chamber 8by a threaded canal 17 into which isscrewed a jet or nozzle 18. Asuitable gasket 19 isinterposed between a shoulder 20 of the jet and theend of an enlarged portion of the canal 17 making a fluid tightconnection therebetween. The jet is provided with a cylindrical duct 21extending longitudinally there- 'through and opening into the chamber 8through the planular surface 9 in substantially axial alignment with theexhaust cham- The upper end of the casing is provided with a pair ofoppositely disposed threaded J bores 42 and 43 adapted to receiveconduits not shown. When a source of water is applied thereto, the sideof the casing may be readily cleaned.

A source of fluid under pressure is conducted by conduits to the twocanals 15 and 16 and is forced downward through the orifice 21 into andthrough the chamber 8.. The high velocity with which the fluid flowsinduces a current of air to flow hlough the Lid upper suction inlet downard through the branch passages 5 and 6 and out with the stream of waterat 12.

The branching of the passages 5 and 6 causes the air stream to engagethe water stream on both sides with equalized pressure preventing theeddying currents that are usuallyset up in devices of this character andeliminating back siphoning of the water. This is further facilitated bythe stream line ridge 10 located on the opposite sides of the air jet.The fiat planular character of the housing and the fact that the jet isso formed that no hollow spaces or air pockets are in back of the jet,closely adjacent to it, also tends to prevent the gathering of globulesof water which would impair the etiiciency of the device.

As best shown in Fig. t I have shown a modified form of upper intake 22which is substantially L-shaped, although the operation is the same asin the device having the intake opening vertically. I

The device may be constructed of a single casting of castiron, malleableiron, brass or any metal which may be rendered rust resisting. Ipreferably drill the canal of the jet 18 by using suitable jigs so thatthe canal extending through the jet is in axial alignment with the chambr 8. The intake and exhaustends'of the device may he hexagonal inshapeto receive a wrench for installation purposes.

In 5 I have illustrated diagrammatically one system of connecting thedevice of my invention, wherein the source of fluid power comprisesa'motor andarotary pump 31 connectedby conduits 32 to thedev'ic'e, andhaving a shut-off valve 33 interposed in the conduit. An exhaust pipe 34is connected to the lower end of the casing and may discharge to thesewer. I have shown a flexible hose 35 connected to the air intake whichis provided with a nozzle 36 which may be any of the various types. Ifind, that with the device connected as shown,that with pressure of 300pounds of water, it is possible to displace approximately 300 cubic feetof air per minute, which creates a very eiiicient suction device capableof sucking up water, dirt, or the like which ordinary suction devicescannot handle. This is especially to be desired around automobilewashing racks where it maybe used in connection with high pressurewashing systems.

The size of the canal in the jet to be used maybe varied byinterchangeable jets which are screwed into the casing by a suitablespanner wrench which may be inserted in notches23 in the large end ofthe jet.

Having thus described my invention in a preferred embodiment, I am awarethat numerous and extensive departures may be 5 made from the embodimentherein illustrated and described but without departing from the spiritof my invention.

I claim:

1. In an air suction device, a hollow casing provided with a waterconduit construction therein, an air-receiving passageway, and adischarge passageway for mixed air and water, the conduit constructioncommunicating with the outside of the casing whereby water may beconducted thereto and terminating inwardly of the casing in asubstantiallyplanularsurface disposed at substantially right angles tothe direction of flow of air through the casing from the air-receivingpassageway to the discharge passageway, a removable nozzle piece in theconduit construction provided with a minute duct having an orificedisposed in said planular surface, whereby a jet of water emerging fromthe orifice impinges at right angles upon the air in the casing incontact with said surface and whereby air in motion toward said emergingwater jet moves at right angles to said jet and into'contact therewith,the discharge passageway being of smaller crosssectional area thantheair-rece'iving passageway, the discharge passagewaybeinglongitudinally spaced from and axially disposed relative to thesaid'orifice and the casing being provided with lateral wallsconvergingtoward the discharge passageway from the orifice.

2. In an air suction device, a hollow casing provided with a waterconduit construction therein, an air-receiving passageway, and adischarge passageway for mixed air and water, the conduit constructioncommunicating with the outside of the casing whereby water may beconductedthereto and terminating inwardly of the casing in asubstantially planula'r surface disposed at substantially right anglesto-the direction of flow of air through the casing from theair-receiving passageway to the discharge passageway, a removable nozzlepiece in the conduit construction provided with a minute duct having anorifice disposed in said plan'ular surface, whereby a jet of wateremergingfrom the orifice impinges at right angles'upon the air in thecasing in contact with said surface and whereby air in motion towardsaid emerging water jet moves at right angles to said jet andintocontact therewith, the discharge passageway being of smallercross-sectional area than the air-receiving passageway.

3. In an air suction device, a walled casing, provided with a dischargepassageway, casing walls converging toward the discharge passageway, anair inlet passageway in the casing wall, a water cohduit construetiondisposed generally intermediately of the two passageways, the conduitconstruction communicating with the exterior of the casing whereby watermay be conducted thereto'and terminating inwardly of the casing in arelatively small discharge duct, the conduit construction being providedwith a planular face disposed substantially at right angles to a centralaxis of the discharge passageway and the duct terminating in an orificedisposed substantially symmetrically centrally of the planular face, theduct being coaxial with said central axis, the parts being so arrangedthat air within the casing and in contact with said planular surface maybe impinged upon at said surface by said jet at right angles to the airat said surface, and so that air in motion through the casing from theinlet passageway to the outlet passageway may move transversely oversaid planular face at right angles to said jet and into engagement withthe jet.

In testimony whereof I hereunto affix my signature thisQOth day ofApril, 1928.

JOHN G. STAMM.

